‘Kill them all and let God sort them out’ was the Catholic slogan during the Albigensian Crusade in France.
Entire cities put to the sword, man, woman and child.
So much for sacraments and the consolation of communion with the Saints.
Pope Innocent III was anything but.
“Albigensian Crusade in France.”
Slaughter of 200,000 to 1,000,000 Cathars - men, women, children - by the pope and his peeps. Crime? Bad theology.
Pope Innocent III started both the Roman Inquisition and two Crusades, including the one against the Albigensians. Although he was one of the most influential Popes in history, he is far from being considered a saint.
Here's an interesting item from his personal history.
Somebody who IS a canonized saint --- St. Lutgarda of Brabant -- received a vision of him being in the fires of purgatory on the very day he died in Perugia, Italy. Engulfed in flames, he declared to her, “I am Pope Innocent”. He continued to explain that he was in purgatory for three crimes grievously offensive to Our Lord. He said --- according to St. Lutgarda--- that he had repented on his deathbed and was saved by the grace of God, but still had to make reparations for his grave faults.
"Alas! It is terrible; and will last for centuries" he is reported to have said to Lutgarda.
This was reported by St. Robert Bellarmine, a highly trained jurist who saw documentary proof (Lutgarda's written testimony of her vision, written days or weeks before before anybody in Brabant --- 880 miles from from Perugia --- knew that the Pope had died.) So do not make the mistake of supposing that evil men and their henchmen---- even wicked Popes --- are regarded as "true believers."
It is debatable whether they, being heretics, are even canonically Catholic.